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折り曲げる。
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#pragma once #include "ofMain.h" class ofApp : public ofBaseApp { public: void setup(); void update(); void draw(); void keyPressed(int key) {}; void keyReleased(int key) {}; void mouseMoved(int x, int y) {}; void mouseDragged(int x, int y, int button) {}; void mousePressed(int x, int y, int button) {}; void mouseReleased(int x, int y, int button) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofEasyCam cam; glm::vec2 make_point(int len, int param); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(285); ofFill(); ofSetColor(39); ofDrawSphere(glm::vec3(), 60); int width = 40; for (int len = 150; len < 320; len += width * 2) { for (int param = 0; param < 100; param++) { auto noise_location = this->make_point(len, param); auto next_noise_location = this->make_point(len, param + 1); int z = ofMap(ofNoise(noise_location.x * 0.0045, noise_location.y * 0.0045, ofGetFrameNum() * 0.005), 0, 1, -50, 50); int next_z = ofMap(ofNoise(next_noise_location.x * 0.0045, next_noise_location.y * 0.0045, ofGetFrameNum() * 0.005), 0, 1, -50, 50); z = (z / 10) * 10; next_z = (next_z / 10) * 10; vector<glm::vec3> vertices; vertices.push_back(glm::vec3(this->make_point(len - width * 0.5, param), z)); vertices.push_back(glm::vec3(this->make_point(len + width * 0.5, param), z)); vertices.push_back(glm::vec3(this->make_point(len + width * 0.5, param + 1), next_z)); vertices.push_back(glm::vec3(this->make_point(len - width * 0.5, param + 1), next_z)); ofFill(); ofSetColor(239); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } this->cam.end(); } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int len, int param) { param = param % 100; if (param < 25) { return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5); } else if (param < 50) { return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5)); } else if (param < 75) { return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5); } else { return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5)); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |